Monday, 14 November 2011

A new study claims a supermassive black hole at the centre of our galaxy is ripping apart entire worlds on a daily basis.

The research by scientists led by Dr Kastytis Zubovas from the University of Leicester in the United Kingdom, explains why Sagittarius A, a giant black hole 26,000 light-years from Earth, flares up in spectacular daily displays of x-rays and infrared radiation.

Writing on the pre-press website ArXiv.org, Zubovas and colleagues propose Sagittarius A, which is 4,000,000 times the mass of the Sun, is destroying planets and asteroids that have formed in a torus of dust and gas around the black hole.

They claim these clouds are a mixture of primordial chemicals and the remains of stars that have already been shredded by the black hole.

That's a similar environment to the protoplanetary disks around stars in which planets form.
Black hole solar systems

This hypothesis has raised the possibility that planetary systems could be evolving around the Milky Way's central black hole in the same way that they would around a star.

Michele Bannister, a graduate student in planetary astronomy at the Australian National University's Mt Stromlo Observatory, says it is plausible that planets can form on the edge of a black hole.

"While the galactic centre is an incredibly energetic environment, planets are very resilient and so could form there," says Bannister.

She says the daily eruption of x-rays and infrared radiation provides clues about the numbers of asteroids, comets and planets likely to exist close to the galactic centre.
Planetary death

While this region may be conducive to the formation of planets and asteroids, Zubovas and colleagues point out that it's also an area where these bodies are destroyed as they move too close to the central black hole.

When this happens, a burst of x-rays and infrared radiation a hundred times greater than normal background energy is detected coming from Sagittarius A, they report.

But the radiation released as the planets and asteroids are destroyed is just a tiny fraction of the levels released when a star falls into the black hole, an event which is estimated to happen once every 100,000 years.

Associate Professor Alistair Graham from Melbourne's Swinburne University says scientitsts have only recently been able to understand how stars and planets can form in hostile environments near supermassive black holes.

"Most, if not all galaxies are thought to have supermassive black holes at their centers."

"The huge bursts of energy and particles beaming out from these gravity wells as stars are torn apart, couldn't explain the small scale x-ray and infrared flares seen daily from Sagittarius A", says Graham.

"However this energy output does match the levels expected from an in falling asteroid or planet."

Sunday, 13 November 2011

The crew of the International Space Station has enabled the "Earthlings" to enjoy the sights of their planet in a way that has not been seen.

This is how our planet looks from the height of 460.2 kilometers.
Beautiful shots of the International Space Station

The video, made with the International Space Station, published by the U.S. Agency for Space Studies (NASA).

Made him the 29th crew mission as they traveled around the planet at a speed of 27,300 kilometers per hour.

Pay attention to the few passing storms. They can be recognized by the lightning that just boosted the effectiveness of this amazing footage.

From Alaska, the phenomenon of aurora borealis illuminated (North Aurora), via Cuba, the Atlantic, around the camera has captured the holy city in Britain, a Pakistani city of Lahore, India's capital New Delhi, the Caspian basin space and much more.

ManyGermansare not willingto make theirphotosdawnedon the Internet-for example, inGoogle'sStreetvjuushowing thestreets of citiesaround the world.Due tothese factstheAmerican gianthad a problemto providethis servicein Germany.Sofarfundeda major studyin which we needto show themanylayersof peopleoverthe internet.

"We wantto understand howthe Internet is changingour world,and in Berlinwe canto investigatemulti-disciplinary," saidIngolfPernis, one of thefounders of the InternetInstitute at theUniversity of Berlin.

Thursday, 10 November 2011

Roskosmos and European cosmic agency and the possibilities of strategic partnerships in the study of the solar system. Is considered as a variant of a common mission to Jupiter, probably with a landing on its satellite Europa. The other option is to win a robotic Moon base editing. The choice side will be known in late November, when the present plan of the program.Both options have positive and negative sides. Moon has been actively studied for several decades. Mission to the Moon is cheaper.About Jupiter and the surrounding area is much less known. From Earth it is not well seen, however, it will let the last 6 years.The first detailed images of Jupiter obtained by the 1970th The apparatus of the American pioneer. A much larger contribution to knowledge on this planet has given NASA's Galileo station, which was launched into orbit and worked there during the 8 years. Then, the station received orders to fly directly to Jupiter, and is burned in its atmosphere. This was the 2003rd year. Scientists feared that Galileo will sooner or later fall to Europe - the second large distances from Jupiter Satellite, in its scope similar to the Moon and terrestrial bacteria will multiply uncontrollably there.Why are scientists worried about Europe? The whole surface of the satellite covers the ice, under which there may be a water layer of the ocean - the appropriate environment for primitive life. Today was a lot of data collected on this satellite, the interest towards him increases, - said the deputy director of the Institute of cosmic research Oleg Korabljov RAN.The global ocean, if any, direct contact with the mineral shell satellites, creating a kind of broth. That there would be a chance for the development of living forms, are the various elements needed - water must be clean. At this stage of research does not suggest a risk moving the camera in Europe. Land on the surface of the radio signal broadcast from there would be a great achievement.According to the scientists, the device for landing, which could be launched by satellite to Europe, will be strictly sterilized. Surface ice is probably not suitable for finding life - similar to a sterile surface of Antarctica. It is hardly possible to drill icebergs to research broth if it contains bacteria. At slimmest point Deblin ice may make a few hundred meters. As for landing, it is not a problem - in Russia is an established technology of such devices, - says Oleg Korabljov.Is it necessary that the device will soon be clear, be clear and the range of his scientific duties, in case if Russia and the Europeans choose to Jupiter mission.

The solutionoffersnanotechnology.Researchershave been able tobuildmoleculesthat bind toproteinscauseinfection.Thesemoleculesare called"inventors"(Tracer),as thisinflammationbecomesvisibleon the CT-scanner, "the inventor or'tracer'mixedwithradioactiveorfloroscentnimcolors,and thenthanks tothe lightorradioactivitycan be measured.That'seasy to see themolecular composition ofindividual organs."

Tuesday, 8 November 2011

Mankindis faced witha "concernmasculinization",with a growingsurplus ofmen.What iscorrect: the warfor women or war because women?Both,because they areless and less.Fora few yearsmenwillbein someAsian countriesengage inwarsfor acquiringlifecompanion.

Who(above)wins,itgirl!

Are wetopuzzle andseductivehistoryonce againdraws attention to its unsolved repetition?

The plague of abortionKristof Gijmoto who follows developments in relation to population has recently been re-warned of the threat "worrying masculinization" of countries like India and China, especially due to the interference of parents and relatives in the future sex of the newborn. How? As soon learn that to be born a girl, resort to abortion.Some demographers believe that the lack of adult women in the next five decades as a cause pervasive effects of which I have the climatic fluctuations. Existing data are frightening.Nature has established a kind of "sexual seesaw", where men predominate slightly: for every 100 female births are born every year 104-106 men. Any noticeable departure from such a balance can only be interpreted as unnatural causes.In China, the most outstanding discrepancy: 120 men versus 100 women, and in some areas is the first for ten more. The same phenomenon is rapidly spreading to other parts of the world, such as Azerbaijan, Georgia, Armenia, Bosnia and Herzegovina and Serbia - 115 in 100 In Vietnam, the somewhat milder - 112 to 100The new scourge of humanity in 1990. said the Indian Nobel Laureate for Economics Amartya Sen in today's famous book, "More than 100 million women are missing." In the meantime, the backlog has increased to 160 million in India. So much, in fact, the unborn souls of women excluded from life. Why?Prevailing three factors: a love of a centuries old sons, the decline of fertility and, perhaps most important, involvement in sex selection due to modern technology and tools. In India alone, according to the respected scientific journal "The Lancet", aborted every year around half a million female embryos!Living with multiple husbandsEven if in the coming ten years the ratio of the sexes back into a natural routine, the men would be faced with a shortage of women for marriage. Only later will not go before the registrar, but shall increase the brotherhood bachelors.Some foresee a growth in the number of women with multiple husbands (polyandry) and tourist trips to satisfy sexual instincts, the other much darker indicate prediction that communities with excess males stir up some kind of sexual wars. Which will come to pass?Particularly alarming is the warning sounded two political scientists, Valerie Hudson and Andrea den Bera, who wrote several years ago that Asian countries with excess male heads threaten the West. In concluding writes that such societies can only be managed in an authoritarian manner, suppressing the violence inside and transferring it outside its borders.Mara Hvistendal in "unnatural selection" represents a different view, pointing out that the previously unfounded. India is, in fact, put a deep democratic roots, despite the gender imbalance. In any case, she says, a society in which men outnumbered are not "pleasant place to live." They are often volatile, sometimes violent.Although the deliberate abortion banned in China and India, is incredibly difficult to enforce.There is no "silver bullet", says Christoph Gijmoto, who believes that the most urgent make sure that the appearance of properly presented, especially in developing countries.If sex selection of the future be identified with cancer, prejudices about women's cigarettes, and ultrasound and abortion of matches. Nowadays, however, must not neglect the women's rights, including the free will of each individual to end an unwanted pregnancy.Can nature (evolution) to offer itself out?

Saturday, 5 November 2011

Japanese supercomputer "K", which is produced by "Fujitsu", broke his own record in the first place, reaching 10 petaflops.

Japanese supercomputer "K", which is produced by "Fujitsu", broke his own record in the first place, reaching 10 petaflops (a thousand trillion - ten to fifteen - operations per second), reported today the French broadcasters.

Although not completed, "the Japanese" was in June, the list of 500 fastest computers, took first place before that held the Chinese "Tjanhe-1A" with an output of 8.1 petaflops.

Japanese "K" is now fully operational, with more than 88,000 processors each with eight cores, and it was announced that will be used in various projects related to scientific research.

"Dance of Death" in a flashGenerally accepted theory, the standard model that describes the finest ingredients and the ruling forces in the cosmos, teaches that antimatter is composed of primary (elementary) antiparticle such matter consists of particles.Each particle is decorated properties (mass, charge, spin, or rotation ...) which make it different from others. And for each there is a corresponding antiparticle, which have some features (like mass or spin) identical, while others (such as electric charge or magnetic moment) the opposite. The most famous example of the electron and positron, which are the reverse charge and magnetic moment, and other characteristics the same.Matter and antimatter in a flash play "Dance of Death", canceling each other, with the release of enormous energy in the form of gamma radiation and the like. The existence of antiparticles and antimatter first in 1928. noted English scientist Paul Dirac, later Nobel Laureate, imagining positively charged electron, or positron, which is confirmed by experiments in four years.If particulate matter that comes into contact with antiparticles - say, an electron positron touches - cancel each other (annihilation) of tremendous release of energy.Since 1955. , when the accelerators ("particle collider") observed antiproton and antineutron, to this day is observed number of antiparticles, and the first core samples antimatter (antiproton antineutron with welded) were observed only decades later. The European Centre for Nuclear Research (CERN) 1995. have finally filled the void first (dice) in antiperiod table, creating antiatom - anti hydrogen, one positron which circle around a lone antiprotons. (antisimbol anti hydrogen H with a dash above).In about an ordinary hydrogen protons, which represents the atomic nucleus, an electron orbits, and in some antiprotons, anti hydrogen, shapes antielectron (positron).As all manner of consolidating (combining) tiniest particulate matter generated in the same manner arises from antiparticle antimatter. Consistent anti hydrogen atom can, for example, occur by binding of positrons to antiproton, with characteristics that should be the same as ordinary hydrogen. Indeed, in antiproton collisions with a jet of xenon atoms appeared anti hydrogen atom.To obtain antimatter, otherwise, it is unlikely a lot of energy, because it lasts a very short time in this lush part of the universe matter. This is an extremely complex undertaking.Two recent discoveries, however, supported the hopes that one day will be filled vacancies in antiperiod table.Dan Brown and terroristsIn March, the International Research Fellowship at the National labs Brukheven (USA) created the first nucleus antihelijuma-4, helium counterparts (number two in Mendeljejev table) from our world. Previously made antihelijum-3, but antihelijum-4 paired more antimatter than ever spotted in one place.

Hydrogen Anti hydrogen

This is additional evidence that antimatter can be linked into stable clusters, as it does matter. It was assumed, but this has not been confirmed.It is equally important as scientists at CERN invented the process in late April anti hydrogen capture. First they get anti hydrogen at extremely high temperatures, and then a fraction of a second antiatome kept in an unusual "electromagnetic cage", before they disappeared.The new method means that antimatter has cooled, making it easy to capture, and then inserted into unusual store, which lasted almost 17 minutes. This approach, directed to consider, can deepen our understanding of the creation of antimatter. (Earth's gravity may refuse anti hydrogen atoms, which is why they break down immediately.)The resurrection of the next antielement - anti lithium will be waiting for years. No one knows how long. Speed ​​the creation of antimatter falling, even 1,000 times, with each antiproton or antineutron. Artificially make anti lithium (three and three antiproton antineutron) - about a million times harder than helium-4. And for now, probably, beyond the technological reach of existing equipment. Is there another path?Physicists studying antimatter in part to figure out one of most completest puzzles. The "big bang", it is assumed, is created equal amounts of matter and antimatter and eons long ago canceled. Hence it seems to matter around in abundance, no one knows why.Maybe a terrible explosion has not delivered one and the other in equal amounts or has removed a huge blob of matter and antimatter in different directions? In this case, all the antimatter in galaxies far from us.Study anti hydrogen and anti helium antielement will help find the remote vastness of the cosmic, the arcane anti stars. If there is, consists of anti helium, anti carbon, anti gold. The same seems to have originated anti beings, based on the periodic table anti chemistry antielement.Far away, Bizaro certainly has its eternal rival - Antisupermena.Physicists, you may have noticed, struggling to keep their antiparticles as long as the electromagnetic captivity, separated from ordinary matter. Why? They are hoping that the door ajar anti world. The properties of antimatter, otherwise, tested under conditions that do not remotely resemble the descriptions in the novel by Dan Brown's "Angels & Demons". (Remember the conspirators who try to steal a mysterious anti-matter.) Addition, and very expensive: for gram you spend $ 25 billion! So little antimatter is created that the terrorists would not use. We know that anti world not yet discovered.

This hugereservoirbelongs to the youngstarTWHydra,and astronomersbelieve thatthis staris not alonein the universethat has awater supply.A team led byresearchersfrom the NetherlandsLeidenUniversityishopingthat in the nexttwo yearswill be ableto observethree morewaterdrive.

Wednesday, 2 November 2011

There is no vaccine against dengue fever carried by mosquitoes, but British scientists say they have just found a way to curb this disease yet. The team genetically modified the insects so that their descendants still die as larvae with no chance for reproduction thereby reducing the number of transmitters of infection.Mosquitoes were altered in the laboratory so that its young people carry a lethal gene transfer island's media.After the experiment are several British university professors, as well as companies "Oksitek", which works closely with Oxford.For researchers, it is important as mosquitoes mutants managed to mate and survive competition by wild insects. When scientists in the earlier experiments sterilize insects, they are not even able to keep up with the intact mosquitoes making it still came to fertilization and recovery of the population.- You just have to be a moderate number of females mated with males genetically modified to make this method failed, explains Luc Alfi, who teaches at Oxford and working for "Oksitek".His associates were released genetically modified mosquitoes in parts of the Cayman Islands affected by Dengue fever. Revised insects accounted for 16 percent of male mosquitoes tested in the Caribbean area. At the end of the experiment, scientists have found a lethal gene in ten percent of the larvae, which, according to them, kind enough to suppress. Finally, the number of mosquitoes in a controlled area decreased by 80 percent.Dengue fever is a virus that gets through mosquitoes bite. World Health Organization recorded 50 million cases per year of which 25,000 patients dies in tropical and subtropical parts of Asia, Australia and America. Patients complain of high fever, rash, headache and bone pain.Proponents of biological engineering, said that this way of controlling the mosquito population as opposed to ecological use of insecticides. However, opponents warn that a modified organisms can no longer return to its natural state. They believe that the "Oksitek" experimented on his own and will operate in those countries where this area is not regulated.Florida, which has from time to time is also affected by the infection, pending approval of the U.S. Department of Agriculture. Expert of the institution Todd Shelley immediately after the publication of the results said that the research is significant, but the more one knows. For example, it will look like mosquito bites genetically modified? In addition, there are data that is 3.5 percent of the larvae survived, despite a lethal gene, so the question is what will they mean for the survival of this species.- Frankenstein question remains, concluded Shelley.